Guhring 9006530205000 Drill Bit 0.8071 in Hss Stub

Product Description

The GUHRING 9006530205000 is a heavy-duty screw machine length (stub) drill bit designed for high-production drilling in ferrous materials. It measures 20.50 mm (0.8071 inches) in diameter with a straight-cylindrical shank of the same diameter, conforming to DIN 1897 standards. The bit is manufactured from M2 high speed steel with a coated finish for improved wear resistance. The 118-degree cone relief point with web thinning reduces thrust at entry and promotes accurate starting. Two spiral flutes provide efficient chip evacuation during drilling operations. Licensed trades and machining professionals use this bit for production drilling in cast iron and steel workpieces.

This stub-length drill bit is suited for applications where rigidity matters more than reach. The shortened flute length of 68.00 mm and overall length of 136.00 mm reduce deflection, making it a reliable choice for CNC machining centers, turret lathes, and drill presses working in cast iron or steel. The 3xD flute-to-diameter ratio supports controlled chip removal at moderate drilling depths. Maximum drilling depth is 1.467 inches (37.25 mm).

Key Features

• DIN 1897 stub-length geometry reduces deflection and improves hole accuracy
• M2 high speed steel construction rated for heavy-duty drilling in cast iron and steel
• Web-thinned 118-degree cone relief point reduces entry thrust and improves centering
• Coated finish extends tool life in abrasive ferrous materials
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification
• h8 diameter tolerance ensures consistent fit in precision toolholders

Compatibility

Designed as an OEM-style replacement and production drill bit for use in standard straight-shank drill chucks, collet chucks, and toolholders accepting a 20.50 mm shank diameter, conforming to DIN 1897 Series 653 specifications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with cutting tool setup. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify the shank is fully seated and the chuck or collet is torqued to the toolholder manufacturer specification before operation. Select feed rate and spindle speed appropriate for the workpiece material and bit diameter per standard machining reference data.